LegacyOrder = NULL;\r
OldData = NULL;\r
DisMap = ZeroMem (CallbackData->BmmFakeNvData.DisableMap, sizeof (CallbackData->BmmFakeNvData.DisableMap));\r
- PageNum = sizeof (PageIdList) / sizeof (PageIdList[0]);\r
+ PageNum = ARRAY_SIZE (PageIdList);\r
VarData = BdsLibGetVariableAndSize (\r
VAR_LEGACY_DEV_ORDER,\r
&gEfiLegacyDevOrderVariableGuid,\r